Padideh Translator is a great software of english translator for iranian, this version is very easy to translate and new version also in this post have a old version of padideh translator, new version build in November 04 , 2007.

Here you see is Effective-English, a great and easy way to learn the Basics of English from a native English speaker. All elements in this program are designed to make you think and understand better, without being consciously aware of learning them.

Разговорный английский. Часть 1. Уровень: начинающие и продолжающие изучение.
Разговорный английский. Часть 2. Интерактивное путешествие - полный курс для продолжающих изучать английский язык.
Тренажер навыков общения и разговорник.
Тренажер словарного запаса.
Грамматический тренажер.

Eclipse crossword maker is a really simple program to use. It has a small footprint You can customise the output to produce just the blank crossword with no words.
How about printing 2 of these and then filling in 50% of the words on 1 and 50% of the words on the other.
Then let  your students define the words to their partner!
NB you can also produce normal crosswords!
Sorry, one more thing - It's completely fre!